This is a very touchy character as these videos will be placed on youtube, I suggest refrencing the anime series if you can't come up with anything but realize this character is a fan favorite and considered the best Champion in the Pokemon series. Looking for a more apethic tone.

"One look at you tells me many things about you. Together, you and your Pokémon overcame all the challenges you faced."

"I can't remember the last time I was put in a corner like this!"

"Just a few moments ago, you were the most powerful challenger. And just now, you became the most powerful of all the Trainers. You are now our newest Champion!"